Joe, a college student, was taking a course in ornithology, the study of birds. The night before the biggest test of the semester, Joe spent all night studying. He had the textbook nearly memorized. He knew  his  class  notes  backward   and   forward. Joe was ready.

　　The  morning  of  the  test,  Joe  entered  the  auditorium  and took a seat in the front row. On the table in the front was a row of ten stuffed birds. Each bird had a  sack  covering its body, and only the legs were showing. When class started, the professor announced that the students were to  identify  each bird by looking at its legs and give its  common 　name, species, habitat, mating habits, etc.

　　Joe looked at each of the birds' legs. They all looked the same to him. He started to get angry. He had stayed up all night studying for this test and now he had to identify birds by their LEGS? The more he thought about the situation, the angrier he got.

　　Finally he reached his boiling  point. He stood up, marched up to the professor's desk, crumpled  up his exam paper and threw it on the desk. "What a ridiculous test!" he told the prof. "How could anyone tell the difference between these birds by looking at their legs? This exam is the biggest rip-off I've ever seen!"

　　With that, Joe turned and stormed toward the exit. The professor was a bit shocked, and it took him a moment to regain his composure. Then, just as Joe was about to walk out the door, the prof shouted out, "Wait a minute, young man, what's your name?"

　　Joe turned around, pulled up his pant legs and  hollered, "You tell me, prof! You tell me!"

Key  words：

ornithology　（n.）鳥類學　click 發音

know  backward  and  forward　倒背如流

auditorium　（n.）大禮堂、大演講廳（美國大學的期中考和期末考，通常集中在同一時間考試，甚至好幾個班集中在一大教室裡考）

sack　（n.）牛皮紙袋

identify 　（v.）辨認

common 　name　（n.）普通名稱

species　（n.）種類　click 發音

habitat　（n.）產地

crumple　up（v.）揉皺

rip-off　騙局

composure　（n.）鎮定　click 發音  

holler　（v.）喊叫